Mold for manufacturing glassware



(No ModeL) v 4 Sheets-Sheet 1.

v J PROEGER MOLD FOR MANUFACTURING GLASSWARE.

Patented May 18, 1897.

L J .l v r W a y w I 3 .10 "MA 6 M F w k aka. a v w m M u 1. a4

lllIl 1 LL X v ig r W w m/ z w i V V Z d i ,W 0/ a E 4 4 Sheets-Sheet 3.

(No Model.)

J-.PROEGER. MOLD FOR MANUFACTURING GLASSWARE. No. 582,950.

Patented May 18, 1897.

Z z e (No Model.) 4 Sheets-Sheet 4.

, J. PROEGER. MOLD FOR MANUFACTURING GLASSWARE.

No. 582,950, Patented May'18, 1897.

UNITED States PATENT @rrrcn.

JULIUS PROEGER, OF GREENSBURG, PENNSYLVANIA.

MOLD FOR MANUFACTURING GLASSWARE.

SPECIFICATION forming part of Letters Patent No. 582,950, dated May 18,1897.

Application filed uly 1 8 9 5.

To all whom it may concern.-

Be it known that I, JULIUS PROEGER, a resident of Greensburg,in thecounty of Vestmoreland and State of Pennsylvania, have invented a newand useful Improvement in Molds for the Manufacture of Glassware; an d Ido hereby declare the following to be a full, clear, and exactdescription thereof.

My invention relates to the manufacture of glassware, one of its objectsbeing to provide for the pressing of articles having small months insuch way that the glass can be easily inserted and measured in the pressmold or matrix without the necessity of feeding it through any smallopening where it could not well be measured except by very skilledworkmen. v

It also has for its object the making of such articles by combinedpressing and blowing in such way that the operation takes place withinthe same general mold, the press-blank being formed within the spaceoccupied by the blowmold section, which is then closed around it, sothat the operation can be rapidly accomplished, and the apparatus isconvenient of operation.

To these ends my invention consists, generally stated, in certainimprovements in the molding apparatus, comprising an upper press-moldsection, which is suitably supported; a removable press-matrix adaptedto be passed horizontally under the upper section and supported inposition for the pressing operation, but entirely independent of theupper section; a base-plate having a center opening through which thepressmatrix may drop, and a blow-mold section swinging under the uppersection so as to close around the blank, the preferred constructionhaving the blow-mold section mounted on the baseplate and the upperpress-mold section mounted above and supported on the blow-mold section,both these parts being hinged and centered on the same vertical shaft.

To enable others skilled in the art to make and use my invention, I willdescribe the same by referring to the accompanyin drawings, in whichFigure 1 is a vertical sectional elevation of the apparatus. Fig. 2 isan enlarged central cross-section showing the mold parts in posi tionfor pressing. Fig. 3 isalongitudinal secserial No. 556,981. (No model.)

tion at right angles thereto, showing the mold .parts after the pressingoperation and the Fig. 4 is a v withdrawal of the pressnnatrix. planview showing the upper press-mold section and the blow-mold section openand showing the base-plate below the same. Fig. 5 is a view of theremovable press-matrix. Fig. 6 is aview of the removable base-blocktothe blow-mold section. Fig. 7 is a perspective sectional View of amold with another form of press-matrix for producing pressed articles ofirregular shape. of such mold, showing the article blown therein. Fig. 9is a plan view of the partible pressmatrix forming part of such mold,and Fig. 10 is a cross-section showing the blow-mold closed around theblank.

Like letters of reference indicate like parts in each of the figures.

My invention is more particularly useful in connection with theformation of small combined pressed and blown articles, such assalt-cellars, which havea very narrow neck and an enlarged body portionbelow the same. It has heretofore been found practically impossible toform these articles by a combined pressing and blowing operation, thecustom being to form them entirely by blowing, which required thesubsequent breaking off and grinding of the tops thereof, leaving thetops rough and imperfect and adding to the cost. In forming thesearticles I employ the -apparatus illustrated in the several figures, themolding apparatus being formed of the baseplate a, which rests upon thetable A, the blow-mold sect-ion b,which is mounted thereon on the shaftor pintle a and above the same, the upper press mold section 0, which ismounted upon the said shaft and is supported by the blow-mold section b,the parts being thus assembled together and remaining in proper relativepositions to each other during the format-ion of the article. Inaddition to the above I employ the removable press-matrix (Z, themold-ring e, and the plunger f, passing through the same. The mold-ring6 forms the base of the box 6', through which the said plunger f passes.An air-chamber e surrounds the plunger f, and air is admitted thereto bythe pipe a This pipe 9 may be in communication with any suitable sourceof supply. The plunger f has the passage f Fig. 8 is a cross-section ICOextending through it, and within said passage is the stem g/ of thevalve g. The stem 9 has the head 9*, which regulates the move ment ofsaid stem. The passage f of the plunger f is placed in communicationwith the air-chamber c by means of the port f The plunger f is securedto the rod 71, which is secured to the ordinary cross-heads i "11,sliding on the standards i and raised and lowered in the ordinarymanner. The moldring (2 is held down by the springs 7;, said springsencircling the rods 7;. These rods 7; are secured to the ring U, whichin turn is secured to the box 0. The plate Z is mounted on the rod 71.,and said plate has openings 1, through which the rods 7.1 pass. The rodsl." have the heads 7:5

The base-plate a has extended in from one side thereof the opening awhich extends beyond the center thereof, and the inner end a which iscurved concentric with the center of the mold, and therefore serves as acentering means both for the press-matrix and the base-block m of theblow-mold section. The baseplate (I has also the centering-pin a, withwhich the blow-mold section I) and upper press-mold section or collar cengage, so as to hold said parts in proper line with relation to eachother, recesses being formed in each such mold part for this purpose.The base-plate has also suitable stop lugs a to limit the opening of theblow-mold section Z). The blow-mold section I) rests directly upon thebase-plate, and it is formed in two sections 1) U the hinges Z1 Z) ofwhich fit around the hinged post or pintle rt, above referred to. It hasalso the handles 0' I), by which it is operated, and at the front end ofit has the guide-lugs b I), which engage with each other horizontally tobring the mold parts into proper line and through which any suitablelocking-pin may extend, though for general purposes the mold may be heldclosed by the handles during the blowing operation. The blew-mold hasthe blowing-cavity 02, formed one-half in each mold-section Z) I), andbelow the same the recess on, in which the base-block m fits, thisbase-block being inserted horizontally through the side opening (L2 ofthe base-plate (t and having in the lower part thereof the circularguide portion 771 which its the curved end a of the side opening andabove such guide portion on it is enlarged so as to form an annularshould 7H3, which rests upon the top face of the base-plate, the block mbeing thus brought to central position by the guide portion m andsupported against downward movement by the annular shoulder m resting onthe top of the baseplate. Vhen the blow-mold section is closed together,the upper part of this block m is inelosed in the cavity or below theblowingcavity 11.

The upper press-mold section or collar 0 is formed in two sections 0 0having the hinges c c fitting around the pintle a and having the lockingguide-lugs c at the front ends thereof, which are locked by means of theregular eceentrie'bin 0 which serves to hold the press-collar closedduring the pressing and blowing operations. The press-collar has alsothe handles 1; 0, one on each section, for operating the two partsthereof. The press-collar has a recess 0 to receive the dependingportion 0 of the plunger-ring c, and below the same the molding portion0, the upper part of which is shown as shaped to mold a screw-tln'ead,while the lower part is shaped to mold the upper shoulder of the articleof larger diameter than the screw-thrczul, the ring-cavityoand mold-face0 being formed one-half in each section of the press-collar. Thedepending neck c of the plunger-ring 0, when it enters the cavity 0,closes the upper part of the press-mold, which is formed of the upperpress-mold section, or collar 0 and the removable press-matrix (I. Theplunger-ring c is carried by the plunger mechanism of the glass-press,and its neck c is carried in the pressing operation down into the cavity0 of the'press-collar, while the plungcrfpasscs through the press-ringin the pressing operation.

The removable press-matrix (Z is carried by the handle 1] and is adaptedtobe passed horizontally into the side opening a of the baseplate andguided by the curved inner end a into proper position. with relation tothe presscollar 0, and with it forms the press-mold, its base restingupon the sliding plate p of the table A and in such position that itstop face coincides with the bottom face of the presscollar. It will benoticed that it has a large open mouth the full width of the article tobe pressed below the neck portion thereof. This is an importantimprovement in glasspressing mechanism, in the fact that a large mouthis provided in the press-matrix, which enables the operator to easilyintroduce the glass into the same and to accurately measure the glassbefore it is cut otf, as the presser can see when the open-mouthedmatrix is tilled, and can cut; off the glass to the height therein whichexperience shows is proper, whereas if the glass were introduced throughthe narrow mouth either of the upper pressmold section 0 or of theplunger-ring c it would be uncertain whether the proper measure of glasswas obtained, this having been the principal reason why such articlesare blown to shape. \Vith this open-mouthed press-matrix, however,unskilled labor can be employed for gathering the glass, and in a shorttime will be able to gather sulticiently well to form perfect articleswithin the mold. The press-matrix may be formed in a single part or intwo sections, the latter being shown in Fig. 9, where the press-matrixis to be opened so as to withdraw it from the pressblank, such as whereenlargements of greater diameter than the mouth of the matrix are formedbelow the sa1nefor example, in articles having bases or collars thereon.In such IIC case the press-matrix r is divided into two sections r W,hinged together at and adapted to be closed together and suitablycentered with relation to the upper section or collar 0, which can wellbe accomplished by forming the base-block r with the base-plate andclosing the press-matrix around it, and to withdraw the press-matrix itis sufficiently opened to free it from the pressed blank and iswithdrawn horizontally and the blow-mold section closed around thebase-block.

In order to form a combined pressed article in the mold above describedand by the method above indicated, the mold is placed upon theglass-press, resting on the platform thereof, and the upper press-moldsection or collar is closed together and locked, the blow-mold sectionbeing left open, and the apparatus is then ready for use. The glass isthen gathered on apunty and carried over to the press and is droppedinto the pressmatrix d, and the operator cuts off the glass at theproper point, such open-mouthed pressmatrix providing for the measuringof the glass, as above stated, because it provides a wide space in whichto drop the glass and let it practically fill the cavity of thepress-matrix before cutting it off. The press-matrix is then passedhorizontally under the press collar, or it may be guided to place beforethe press-collar is closed over it, but as the parts are assembled forthe pressing operation the press collar and matrix form the press-mold.The plun ger-rin g e and the plunger f are then lowered and the articleis pressed, and if that completes the article it is only necessary tolower or open the press-matrix andopen the press-collar to remove thearticle. In the pressing operation it will be seen that all the glass isfirst contained within the press-matriX, but under the pressure of theplunger it is caused to rise around the plunger and fill the mold-cavityo of the press-collar, being forced up against the plun ger-rin ge,which forms the top of the mold-cavity, and the glass being thuscaused to rise from the openmouthed press-matrix into the narrowneckmold cavity of the press-collar. During the pressing operation thevalve g of the plunger is of course closed. If it is desired to blow thepressed article or blank so formed, such as in the making ofsalt-cellars, the plunger f is withdrawn, as shown in Fig. 1, to permitthe blank to shrink or contract, and the sliding plate 1) is withdrawn,which will allow the press-matrix to drop from the press-collar,dropping down until its shoulder d rests on the top of the base-plate a,and the matrix can then be withdrawn horizontally. If a partiblepress-matrix, such as shown in Fig. 9, is made, the two sections can beopened out, which will free it from the article, and the press-matrixthen withdrawn. This leaves the pressed blank 3 in the press-collar andwithin the blow-mold section, and the operator then inserts thebase-block m, guiding it to place by its guide portion m and itsshoulder m resting upon the top of the baseplate, and he then closes theblow mold around the same. The plunger f having been previouslywithdrawn until its lower end is just beyond the collar of the pressedblank 5 to permit said collar to contract or shrink, air under pressureis admitted by the pipe 6 into the passage f of the plunger, and thearticle is thus expanded within the blow-mold. The valve 9 is open edeither by gravity or the pressure of the air. The blow-mold section andpress-collar are then opened and the article withdrawn.

\Vhere the press-matrix is in two sections, as in Fig. 9, it is placedwithin the blow-mold section and closed around the base-block, the glassis gathered and fed thereto and cut off, the upper section or collarclosed around it, and the article or blank pressed, and the pressmatriXis then opened and withdrawn horizontally, and if the blank is to beblown the blow-mold section is closed around the blank fitting aroundthe base-block and the article blown to shape in the manner described.

Instead of introducing the air through the plunger, a separate blowpipemay be introduced into the upper press-mold section, as shown in Fig. 8.I thus provide for the combined pressing and blowing operations withinthe same apparatus and within the blowmold, which is centered and guidedto place by the operator and is quickly formed around the article afterit is pressed, and I am enabled, therefore,'to rapidly form combinedpressed and blown articles within the same molding apparatus. I am alsoenabled to form such articles with very narrow necks or months and toform perfectlymolded top edges to such necks or months; and I provide anapparatus which can be operated by unskilled labor and in which theglass can be easily measured for pressing, while there is positiveguiding means between the presscollar and blow-mold section which willalways bring them into the proper line and insure the formation ofperfect-blown articles.

Vhat I claim as my invention, and desire to secure by Letters Patent, is

1. The combination in a glass-mold, of a partible blow-mold and apartible upper pressmold section mounted above the same, both beingmounted on the same shaft, and a removable press-matrix adapted to beinserted horizontally under the upper press-mold section and within theblow-mold when opened, substantially as set forth.

2. The combination of a base-plate-having a side opening therein, andhaving a shaft, a partible blow-mold section mounted on said shaft, apartible upper press-mold section mounted on said shaft above theblow-mold section, a removable press-matrix adapted to be insertedhorizontally under the upper sec tion through the side opening andWithin the blow-mold when opened, and dropped therefrom, and abase-block for the blow-mold adapted to be inserted through the sideopening of: the base-plate and forming the base to the blow-mold \vhenclosed, substantially as set forth.

3. The combination of a base-plate having a side opening therein, andhaving a shaft, and a partible blow-mold hinged thereon a partible upperpress-mold section hinged on said shaft above the blow-mold, a removablepress-matrix adapted to be inserted under the press-collar within theblow-mold when opened and removed therefrom, a base-block for theblow-mold adapted to be inserted through the side opening of thebase-plate and having a shoulder resting on the baseplate, and formingthe base to the blow-mold \vhen elosed, substantiiilly as set; forth.

